Update cheatsheets

tldr/linux/libinput

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# libinput
+
+> Interface with libinput.
+> More information: <https://wayland.freedesktop.org/libinput/doc/latest/>.
+
+- List all devices recognized by libinput:
+
+`sudo libinput list-devices`
+
+- Print all libinput events:
+
+`sudo libinput debug-events`
+
+- Show a GUI to visualize libinput's events:
+
+`sudo libinput debug-gui`
+
+- Debug tablet axis values:
+
+`sudo libinput debug-tablet`
+
+- Display help:
+
+`libinput -h`